Joel, i am going to have to "possibly" disagree with John here...
I previously had a Marantz MM9000 powering my M60's ect, and with the large space i have, i was driving that amp into clipping during movies... So i bought more power. The "will i have enough power" question is a very relative question... As John pointed out, you may very well have enough power. However, you may not... it depends on how loud you are wanting to play your speakers, do you want to be able to hear them upstairs? If so, how loud. As John said, from 10Ft away, you "should" have enough power... I sit 13Ft away from my speakers, and the 135W that the MM9000 is rated for was not enough for movie viewing, i was driving the amp into clipping on several channels...
This power question is something that me and John have pretty much polar opposite opinions on... :~)
